My April nights just posted as well, so looks like whatever log jam there was has cleared.
I also just took the upgrade offer for a one time 15 elite night bonus so now I will no longer have to worry about the $3k/night posting. I took the offer because I figure at some point in the next 18 months they are just going to take the $3K/night benefit away unilaterally. i know Chase has been good about keeping benefits in place, but seems like either Marriott or Chase really doesn't like the $3K/night benefit (i have received 5 upgrade emails) so I figure it is not long for this world and I might as well get 15 nights while I can!. I guess only time will tell if this was a good move or not!